Which of the following statements about uniformitarianism is correct?
a. geological processes occuring today ahve always occured in the past.
b. geological processes have changed throuhghout the earth's history
c. features on the earth's surface formed as they appear today and have never changed
d geological processes have stoppped completely at different points in time

a. geological processes occurring today have always occurred in the past

Explanation:

The theory of uniformitarianism is a theory that suggests that the changes in the crust of the Earth have been the result of geological activities that have been continuous and uniform processes. This theory doesn't really have big following in the present, though it has been much more popular in the past. The reason for that is that there have been numerous evidence that the changes in Earth's crust have not been created constantly by the same processes throughout the whole geological past. The supporters of this theory still stay strong on their beliefs though despite the evidence, and they offer other ''evidence'' that support their opinion.

hola:

ef0: daños leves. algunas tejas caídas y otras pequeñas piezas de los tejados arrancadas, algunos daños en canaletas, ramas de árboles rotas y algunos árboles poco profundos arrancados. los tornados que no causan daños visibles (por ejemplo aquellos que se producen en campos abiertos) se valoran siempre como de ef0.

ef1: daños moderados. tejados seriamente despedazados, caravanas y casetas volcadas o seriamente dañadas, perdida de puertas exteriores y ventanas y otros cristales rotos.

ef5: daños increíbles. las casas fuertes pueden quedar arrasadas hasta los cimientos, las estructuras de hormigón armado dañadas críticamente, los edificios altos sufren graves deformaciones estructurales. devastaciones increíbles.

y según esto creo que puedes sacar tus conclusiones. y la verdad la escala ef10 si no se decirte por que no la eh visto o mejor dicho estudiado. espero que te sirva. suerte.